Office documents include a code that tracks the MAC address of the machine that created the document. What is this code called?

• A. the Microsoft Virtual Machine Identifier
• B. the Globally Unique ID
• C. the Personal Application Protocol
• D. the Individual ASCII String

Answer: (B)

Globally Unique Identifier is the term for a 128-bit value used to uniquely identify objects, like a document, across systems. Office assigns a GUID to a document to ensure it has a unique identity, and some UUID generation methods (notably time-based versions) can incorporate the machine’s MAC address as part of the value. That’s why this kind of code is described as a Globally Unique ID.

The other options don’t fit. A Microsoft Virtual Machine Identifier isn’t a standard identifier used for documents. A Personal Application Protocol isn’t related to document metadata or identification. An Individual ASCII String isn’t a formal identifier type like GUID.